# CVE-2026-49191: Acer Connect M6E hard-coded API keys in M3WebServer

Source: https://junglewise.ai/threats/cve-2026-49191-acer-connect-m6e-hard-coded-api-keys-in-m3webserver  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-04. Updated: 2026-06-04  
License: CC BY 4.0 with a link back

CVE-2026-49191 · Severity: info · CVSS 9.3 · Published 2026-06-04

The Acer Connect M6E 5G portable router contains a security flaw where sensitive backend API keys are hard-coded into its web server component. These keys can be exposed to unauthorized users through detailed error messages displayed by the device. An attacker who obtains these keys could potentially gain unauthorized access to backend services, compromising the security and privacy of the device and its owner.

Technologies: [Acer Connect M6E 5G Portable WiFi Router](https://junglewise.ai/threats/technologies/connect-m6e-5g-portable-wifi-router). Vendors: [Acer](https://junglewise.ai/threats/vendors/acer).

## Quick answers

**Is CVE-2026-49191 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-49191 being exploited in the wild.

**How severe is CVE-2026-49191?** Informational severity, with a CVSS score of 9.3, published 4 June 2026.

**Which products and versions are affected?** Acer Connect M6E 5G Portable WiFi Router M6E_AI_1.00.000019 and earlier.

**Is there a fix for CVE-2026-49191?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-49191 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2026-49191?** Check whether you run Acer Connect M6E 5G Portable WiFi Router at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The M3WebServer component in Acer Connect M6E firmware contains hard-coded backend API keys. Due to improper error handling (CWE-287), these keys are leaked in verbose error pages generated by the web server. A remote, unauthenticated attacker can trigger these error pages to intercept the keys. This allows for unauthorized authentication to backend services. Acer plans to remediate this by transitioning to dynamic device-level certificate validation and obscuring diagnostic error outputs in future firmware updates.

## Affected products

- Acer Connect M6E 5G Portable WiFi Router M6E_AI_1.00.000019 and earlier

## Timeline

- 2026-06-04: advisory: NVD and Acer published the vulnerability details.

## References

- [https://community.acer.com/en/kb/articles/19707](https://community.acer.com/en/kb/articles/19707)

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- [Acer Connect M6E 5G Router Information Exposure in Web Admin Panel](https://junglewise.ai/threats/cve-2026-50224-acer-connect-m6e-5g-router-information-exposure-in-web-admin)
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- [Acer Connect M6E IDOR in account validation endpoint](https://junglewise.ai/threats/cve-2026-50213-acer-connect-m6e-idor-in-account-validation-endpoint)